Headlight-reflector



(No Model.)

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No. 525,571. Patented Sept. 4, 1894.

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UNITED STATES PATENT OFFICE.

MARK O. AINSLIE, OFICINCINNATI, OHIO.

HEADLlcHT-REFLECT'OR.

SPECIFICATION forming part of Letters Patent No. 525,571, dated September 4, 1894. Application led December 18, 1891. Serial No. 415,449. (No model.)

To all whom it may concern,.-

Be it known that I, MARK 0. AINSLIE, a citizen of the United States of America, and a resident of the city of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Reflectors for Locomotive =llead lights, of which the following is a specicaion.

The nature of my invention and the advan, tages derived therefrom will be apparent from the following description and claim.

In the accompanying drawing, forming a part of this specification, and to which reference is hereby mada-the figure represents a vertical, central longitudinal section of those portions of a locomotive head light which embody my invention.

A represents a glass reflector of parabolic form. The rear exterior surface of the glass reliector is coated with a coat of quicksilver, thereby greatly increasing its capacity for refleeting the rays of light from the light employed in connection with the reflector.

In practice, the. interior of a metallic casing B is covered with a layer of fresh soft cement, and the silvered glass reiiector is introduced within the casing, and brought into contact with the latter. As this cement sets or dries, the glass reflector is securely connected to the casing. I thus obtain a very powerful and strong refiector. I combine with this an electric light. The preferred description of such light, and the preferred mode of its application are as follows :In the rear end of the glass reflector, I form an orice A', by the use of a sand blast. An oriice B', of similar diameter, is present in the metallic casing. Asimilar orifice C extends through the cement as well as through the silvered glass and the casing. In this orice, I x the socket D2 of an incandescent lamp D, whose bulb D is located inside of the space inclosed by the glass reflector, and near the apex thereof. The socket D2 and consequently the lamp are preferably secu red in po; sition by means of a layer of cement C2, surrounding the socket D2 with the said orifices, and filling the space between the latter and the socket. The glass bulb D extends forward preferably on the axial line of the refiector. The wire D3 for the conduct of electricity to the lamp, and the wire D4 for the conveyance of the electricity away from the lamp, issue from the lamp D preferably at its rear end, in the well known manner, and

are'respectively connected to the oppositeV poles of the source of electrical energy. This source of electrical energy is preferably a storage battery, but maybe a dynamo, or other desired description of apparatus for generating electricity.

In practice, I obtain a light throwing apparatus of remarkable brightness and of extraordinary powers of reflection and projection, one exceedingly simple of construction and efficient in operation.

What I claim as new and of my invention,

and desire to secure by Letters Patent, is

The concave glass reflector and a metallic casing, and a medium of cement uniting the reflector to the casing, the refiector having orifice A', and the casing having orifice B', and the layer of cement perforated at C', and an incandescent electric lamp whose socket extends through and is located in said oriiices, and a layer C2 of cement lining said orices, and surrounding the said socket, and uniting the latter to the reflector and casing, substantially as and for the purposes specitied.

MARK O. AINSLIE. 

